23154425440 has 24 divisors (see below), whose sum is σ = 54702330480. Its totient is φ = 9261770112.

The previous prime is 23154425431. The next prime is 23154425443. The reversal of 23154425440 is 4452445132.

It is a super-2 number, since 2×23154425440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23154425396 and 23154425405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154425443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72357420 + ... + 72357739.

It is an arithmetic number, because the mean of its divisors is an integer number (2279263770).

Almost surely, 2^23154425440 is an apocalyptic number.

23154425440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23154425440 is an abundant number, since it is smaller than the sum of its proper divisors (31547905040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23154425440 is a wasteful number, since it uses less digits than its factorization.

23154425440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144715174 (or 144715166 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

The spelling of 23154425440 in words is "twenty-three billion, one hundred fifty-four million, four hundred twenty-five thousand, four hundred forty".